JPS6060436A - Air conditioner - Google Patents

Abstract

PURPOSE:To prevent the lowering of the efficiency of heat exchange even when a suction port is formed in small size on a design in thin-form structure by maximizing a thermal gradient by mounting the positions of an inlet and an outlet for a heating medium in a heat exchanger where air velocity is fastest. CONSTITUTION:A cross-fin type heat exchanger 10 consists of a plurality of straight tubes 10b orthogonally mounted to a large number of fins 10a, U-tubes are connected to both ends of the straight tubes, and tube-inside flow paths are formed to two zigzag shapes. An inlet 10d and an outlet 10e for a heating medium are formed where front-passing air velocity is fastest so that a thermal gradient is opposed to an air current A. Accordingly, when a fan 11 is operated, air is sucked from a suction port 9, but air velocity in a section facing to the suction port 9 is made fastest on the front of the heat exchanger 10. However, the thermal gradient is maximized because the heating-medium inlet 10d and outlet 10e for the heat exchanger 10 are formed at the positions of the front of the heat exchanger, the efficiency of heat exchange in the sections is further improved, and the efficiency of the whole heat exchanger can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a thin air conditioner using a cross-flow fan.

[Background of the invention]

As shown in FIG. 1, air conditioners tend to be smaller and thinner so as to take up less installation space, and the design of the air conditioners is designed to be small so as not to create an unnatural feeling. Therefore, adult 1
The inner heat exchanger 2 has a vertically elongated cross section and is generally installed facing the suction port 4 provided on the front panel 3. When the cross-flow fan 5 is operated in this configuration, the air sucked through the suction port 4 undergoes heat exchange by the heat exchanger 2 and is blown out from the blow-off port 6 into the living room. However, in a thin structure as shown in FIG. 1, unbalanced wind speed on the front side of the heat exchanger 2 has a large effect on performance deterioration. Therefore, in order to make it soundproof, it was necessary to sacrifice the design and make the suction port thicker on the front of the heat exchanger to make the front wind velocity uniform.Therefore, it was impossible to make the suction port smaller. It is something.

[Purpose of the invention]

The present invention has been made to improve the above-mentioned conventional drawbacks,
It is an object of the present invention to provide an air conditioner that does not reduce heat exchange efficiency even when the suction port is designed to be small in a thin structure.

[Summary of the invention]

Focusing on the fact that when the suction port is provided small, the heat exchange efficiency can be increased by increasing the temperature gradient of the heat exchanger at the part of the front surface of the heat exchanger where the air velocity is highest at the suction port 1, and the present invention has been developed by In order to increase the heat exchange efficiency, an artificial outlet for the heat medium is provided at a position facing the air flow so that the temperature gradient force 5 opposes the air flow.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.

7 is a national body, 8 is a front panel, 9 is a relatively small suction port provided on the front panel 8, 10 is a cross-fin-shaped heat exchanger with a vertically elongated cross section, and 11 is provided at the bottom of the heat exchanger 10. The cross-flow fan 12 is an outlet provided in front of the fan 11. Here, the cross fin type heat exchanger 10, as shown in FIG. 3, includes a plurality of straight pipes 10b provided perpendicularly to a large number of fins Oa, and U-shaped pipes (not shown) are connected to both ends of the straight pipes 10b. The flow path inside the pipe is configured to have two meandering shapes.

In other words, it is 2 passes. Furthermore, the heating medium inlet 10d and outlet] OC (inlet 10d and outlet) are provided so as to face the air flow A1 with a thermal gradient force at the part where the wind speed passing through the front is fastest (in this case, near the rear of the suction port 9). .Therefore, this composition jar is 3
L)-〇 is designed so that the thermal gradient is directed to the airflow direction on all sides in the longitudinal direction of the heat exchanger 10.

In the configuration described above, when the fan 11 is operated with a force of ≦, air is sucked in through the suction port 9, and the wind speed at the front surface of the heat exchanger 10 facing the suction port 9 is highest.

However, since the heat medium inlet 10d and outlet 10e of the heat exchanger 10 are located at the 20th point, the thermal gradient is the greatest - the heat exchange efficiency in this part is much improved, and the heat exchange efficiency in this part is greatly improved. This will improve efficiency.

〔Effect of the invention〕

As described above, according to the present invention, the thermal gradient is maximized by locating the inlet and outlet of the heat medium of the heat exchanger in the part where the wind speed is highest, and the entire surface of the heat exchanger is made to have counterflow. , the overall heat exchanger efficiency is improved, and the design can be made thinner without being affected by the area of the suction port.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of a conventional air conditioner, Figure 2? 1 is a longitudinal sectional view of an air conditioner according to the present invention, and FIG. 1 is a diagram showing the configuration of a heat medium passage of a heat exchanger provided in the air conditioner. 9...Suction port, 10...Cross fin heat exchanger, 11...Once-through fan, 12...Blowout port, ]Od...Heat medium inlet, ]Oe・・・ Heating medium outlet Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1 Air having a heat exchanger provided facing the front suction port, a cross-flow fan provided to allow air to pass through the heat exchanger, and an outlet from which air is blown out by the cross-flow fan. In the harmonizer, a heat medium output is provided on the suction port side of the part where the wind speed passing through the front surface of the heat exchanger is fastest, and a heat medium inlet is provided on the blower side, and the flow of each heat medium is controlled from the inlet and outlet to the heat exchanger. An air conditioner equipped with a heat exchanger that is bifurcated into two paths in the longitudinal direction so that the temperature gradient on the heat exchanger surface is entirely opposite to the flow direction of the flowing suction air.